The next step - now that you have correctly marked the centre of the room and selected the tile designs and patterns - is applying the adhesive for the tile. If you are using self-sticking tile, skip this section.
Read all instructions for the product and follow carefully. Begin by spreading an even coat of adhesive over one‐fourth of the floor. Most adhesives are applied with a notched trowel, but some are still applied with a brush or roller.
In most cases, floor tile cement will dry to the proper consistency in about 15 minutes. However, your exact time may vary depending on humidity, temperature, etc. in the room where your are applying the tile.
After about 15 minutes, place your thumb onto the cement (see Fig. 6). The cement should feel tacky but should not actually stick to your thumb. If it does stick, allow a little while longer for proper drying.
When tacky but not sticky, the cement is ready for tile application.